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Subject: Re: [OMPI users] Backwards compatibility?
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-07-23 17:47:42


I doubt those two would work together - however, a combination of
1.3.2 and 1.3.3 should.

You might look at the ABI compatibility discussion threads (there have
been several) on this list for the reasons. Basically, binary
compatibility is supported starting with 1.3.2 and above.

On Jul 23, 2009, at 3:28 PM, David Doria wrote:

> Is OpenMPI backwards compatible? I.e. If I am running 1.3.1 on one
> machine and 1.3.3 on the rest, is it supposed to work? Or do they all
> need exactly the same version?
>
> When I add this wrong version machine to the machinelist, with a
> simple "hello world from each process type program", I see no output
> what soever, even with the verbose flag - it just sits there
> indefinitely.
>
> Thanks,
>
> David
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